I agree with working with red LEDs--one of the things I'd use a backlit screen for is in the observatory, once I fix my calc and get around to writing a program to calculate planetary positions. --Jon, N9RUJ jnieho38@calvin.edu www.calvin.edu/~jnieho38 "Outside of a dog a book is a man's best friend. Inside a dog it's too dark to read!" --Marx (Groucho, not Karl)